US2613547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual throttle control
Assignee: Lockheed Martin Corp
•
Filing: 1948-12-07
•
Granted: 1952-10-14
•
Expires: 1968-12-07
Abstract
No abstract record available.
Inventors
- 👤 Charles D Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:00
CPC Classifications
F; F02; F02D; F02D25/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20207; Y10T74/20213; Y10T74/20576; Y10T74/20582; Y10T74/2063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1269581A
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US1454505A
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US1641567A
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US1889295A
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US1994651A
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US2071177A
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US2235013A
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US2185160A
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US2265260A
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US2319908A
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US2313768A
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US2439393A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |